/*
 * Copyright (c) 1995, 2011, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
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 */

package java.lang;

/**
 * {@code RuntimeException} is the superclass of those
 * exceptions that can be thrown during the normal operation of the
 * Java Virtual Machine.
 *
 * <p>{@code RuntimeException} and its subclasses are <em>unchecked
 * exceptions</em>.  Unchecked exceptions do <em>not</em> need to be
 * declared in a method or constructor's {@code throws} clause if they
 * can be thrown by the execution of the method or constructor and
 * propagate outside the method or constructor boundary.
 *
 * @author Frank Yellin
 * @jls 11.2 Compile-Time Checking of Exceptions
 * @since JDK1.0
 */
public class RuntimeException extends Exception {

  static final long serialVersionUID = -7034897190745766939L;

  /**
   * Constructs a new runtime exception with {@code null} as its
   * detail message.  The cause is not initialized, and may subsequently be
   * initialized by a call to {@link #initCause}.
   */
  public RuntimeException() {
    super();
  }

  /**
   * Constructs a new runtime exception with the specified detail message.
   * The cause is not initialized, and may subsequently be initialized by a
   * call to {@link #initCause}.
   *
   * @param message the detail message. The detail message is saved for later retrieval by the
   * {@link #getMessage()} method.
   */
  public RuntimeException(String message) {
    super(message);
  }

  /**
   * Constructs a new runtime exception with the specified detail message and
   * cause.  <p>Note that the detail message associated with
   * {@code cause} is <i>not</i> automatically incorporated in
   * this runtime exception's detail message.
   *
   * @param message the detail message (which is saved for later retrieval by the {@link
   * #getMessage()} method).
   * @param cause the cause (which is saved for later retrieval by the {@link #getCause()} method).
   * (A <tt>null</tt> value is permitted, and indicates that the cause is nonexistent or unknown.)
   * @since 1.4
   */
  public RuntimeException(String message, Throwable cause) {
    super(message, cause);
  }

  /**
   * Constructs a new runtime exception with the specified cause and a
   * detail message of <tt>(cause==null ? null : cause.toString())</tt>
   * (which typically contains the class and detail message of
   * <tt>cause</tt>).  This constructor is useful for runtime exceptions
   * that are little more than wrappers for other throwables.
   *
   * @param cause the cause (which is saved for later retrieval by the {@link #getCause()} method).
   * (A <tt>null</tt> value is permitted, and indicates that the cause is nonexistent or unknown.)
   * @since 1.4
   */
  public RuntimeException(Throwable cause) {
    super(cause);
  }

  /**
   * Constructs a new runtime exception with the specified detail
   * message, cause, suppression enabled or disabled, and writable
   * stack trace enabled or disabled.
   *
   * @param message the detail message.
   * @param cause the cause.  (A {@code null} value is permitted, and indicates that the cause is
   * nonexistent or unknown.)
   * @param enableSuppression whether or not suppression is enabled or disabled
   * @param writableStackTrace whether or not the stack trace should be writable
   * @since 1.7
   */
  protected RuntimeException(String message, Throwable cause,
      boolean enableSuppression,
      boolean writableStackTrace) {
    super(message, cause, enableSuppression, writableStackTrace);
  }
}
